but they actually used the phrase barack obama which threw us off. they confirmed that the message was fake and jay carney said the president was fine. within three minutes of the tweet, the dow plunged 147 points before recovering. some traders controlled cnbc they canceled orders and waited for more information. while human traders were able to protect their clients, that may not have been the case for many high frequency firms that use computers to scour headlines for good or bad news and trade on that. you'll see the vix here which spiked 10% briefly. reuters says the move wiped out $136 billion from the s&p 500's value. a group called syrian electronic army, which is supportive of president bashar al assad is claiming responsibility and taking credit for hacking the bbc weather service and this past weekend of cbs's "60 minutes." it was quite a startling situation as you can understand to see the dow drop so precipito precipitously. they do watch everything including twitter. it's a brand new world that we're dealing with here. >> underscores tw